caillau



my M, i925.

ATTORNEY Patented duly 14, 1925.

ACOUI.LIENG' CLIP.

Application filed December 31, 1923. Serial No. 683,732.

. metallic band or ligature held at one of its ends around the twojuxtaposed ends of a metallic shackle, such shackle having in blank forma rectangular link shape and being bent back upon itself so as topresent two .symmetrical opened out portions vor loops through which awinding split pin is inserted, the said metallic band or ligature beingbent around the mutually overlyingen ds` of the said shackle and firmlyclamped thereagainst. ln using such clips, one end of the band is bentaround' the two juxtaposed ends of the shackle and is then bent backupon itself, as above stated. The remaining or greater portion of thesaid band is afterwards passed once or twice, according to practicalrequirements, around the coupling sleeve and its free end is insertedthrough the slot in the windinopin, there now only remaining to rotatethe said pin to the desired extent to draw the said band tightly uponthe said fsleeve and thereby ensure the couplingof the articles that itconnects. The band or ligature having thus been tightened up, thewinding pin remains substantially stationary thus ensuring theinvariable coupling of the said articles.

Now, the present invention has reference to new and useful `improvementsin the above described coupling clips, .such improvements supersedingthe split winding pin as above referred to by a cylindrical slottedwinding pin with a view to eliminating certain drawbacks consequent uponthe use of such split pins when utilizing clips of the above describedtype.

A primary feature of the improved winding pin according to the inventionresides in its being somewhat larger in diameter than the inner diameterof the loops of the shackle so as to be capable when it is beinginserted therethrough, to slightly force apart the two overlyingr endsof said shackle, for a purpose to be described hereinafter.

A further feature of this improved winding pin resides in itsl beingprovided with a diametrically arranged and outwardly flaring slot onlyextending over a predetermined part of its length from one of its endsand sufficiently long to permit said slot to register with the openedout portion of the shackle when'the said pin is in proper positiontherein, for a purpose to be described hereinafter.

A still further feature of this improved pin resides in the fact that itis advantageously formed in its non-slotted end with an enlargedcylindrically, prismatically or 7o spherically shaped head, the latterbeingy pierced with a suitably sized round hole at right angles to theslot alluded to, also for a purpose to be described hereinafter.

A still further feature of this improved lwinding pin resides in thefact that the outer or top face of its head is formed with a`diametrical groove, also for a purpose to be described hereinafter.

A still further feature of this improved 8G winding pin resides in itsslotted end, opposite to the one provided with the enlarged head, beingrounded for facilitating the insertion thereof through the looped partof the shackle. S5

By using a cylindrical winding pin presenting the above mentionedfeatures in coupling clips pertaining to the type as above referred to,the following advantages are secured 90 rlhe winding pin is firmlyretained within the shackle in the proper position without necessitatingany nuts, screws or other locking members, and may be released as oftenas required from the articles that it couples without requiring theunrolling or uncurling of the metallic band or ligature, merely bypulling the winding pin out of the looped part of the shackle afterhaving slightly unwound it. The clip may afterwards be tightened againupon the articles to be recoupled merely by the sequence of the operations described, but in an inverse order.

ln the accompanying drawing is illustrated the improved coupling clipand pin embodying the invention and the manner of utilizing it forcoupling two pipe sections.

Fig. l is a longitudinal elevation of theaccording to two modifications,showing the pin deprived of any enlarged head and the winding pinprovided with a spherical head,

y respectively.

Fig. 2 shows the two ends of the pin.

Fig. 3 shows the centrally opened out blank for making the shackle,assuming same to be lying on the Hat.

Fig. 4 shows such shackle in its bent over form in elevational and edgeviews respectively. i f

Fig. 5 shows the whole of the clip, the end of the metallic band beingbent back upon itself around the two overlying ends of the shacklebut'not yet curled upon itself.

Fig. 6 is a perspective illustration of the first curling phase of theband.

Fig. 7 is a perspective view of the clip, on completion of the secondcurling phase u of its band.

Fig. 8 is a perspective view of the method used for passing such ametallic bandl around the sleeve connecting two pipe sections.

Fig. 9 is an edge view of the whole clip showing how its band is curledand held in position.

designates the cylindrically shaped winding pin, according to theinvention. Said pin is provided with a diametrical slot b extendingtherethrough from one of its ends and as far as a4 position c situatedat a short distance from the head e. As clearly illustrated, theoutermost portion of said slot b is flared outwardly as at d. The head eof the pin may be cylindrically', prismatically lor spherically or evenotherwise suitably shaped according to the requirements; It is piercedwith a hole f extending therethrough at right angles to the slot b. Thishole f is adapted for receiving the tail portion of a tool D (see Fig.8) for the purpose of rotating the pin a and thus winding up orunwinding (as the case may be) the clip, as will appear hereinafter. Thehead e is moreover formed on its outer or to face with a diametricalgroove g adapted or receiving the bit of a screw-driver or similar toolalso for the purpose of rotating the pin;

The shackle is obtained by bending upon itself substantially midway ofits length a rectangular metallic blank plate lm opened out centrally toform a rectangular opening o the size of which is reckoned so as to givethe perimetral margin of the said blank a uniform width and consequentlyan even resistance all around. The bending of the shackle upon itself iseli'ected so as to give same in edge view the peculiar shape shown inFig. 4, the loops nl being adapted 'for receiving the winding pin. .i

As above stated, the diameter of the pin a intacte of both loops fr,whereby when inserting said pin within said loops, the overlying ends Zof the shackle are slightly forced apart (as shown in Fig. 4).

In using the clip, one end of the metallic band al intended'forconstituting the ligature is passed through the space between the pinand this ends Z of the shackle and then bent back upon itself around thesaid ends Z so that its extremity A should be positioned slightly beyondthereto, as clearly illustrated in chain lines in Fig. 4.

When it is ldesired to couple together two articles, for instance twopipe sections E E of equal diameter (see Fig. 8), cent ends must firstof all be wrapped up within a sleeve C, made of india rubber or thelike, which sleeve is afterwards ligatured by means of the improved clipaccording to the invention.

As clearly illustrated in Fig. 6, after the first curling of the band A,its free extremity lc is passed through the space h and then passed orcurled a second time around the. article, after which the said extremityla is inserted through the slot b in-the pin a, the protruding tonguebeing cut oil'. By4

then rotating the pin a, either by introducing the tail of a tool D (seeFig. 8) into its v hole f, or by gripping its prismatical head e withinthe jaws of a Spanner, or else by inserting the bit of a screw-driver orsimilar tool'in the groove g, it becomes possible to wind up the saidpin a and thus to strongly tighten the two curls of the band A aroundthe sleeve C" or equivalent member. During the rotation of the pin a, asabove described, as the band A wraps up the two overlying ends b of theshackle, said ends are pressed together, thus slightly lessening theinner diameter of the loops n which in turn exert a braking action uponthe pin a. Furthermore, the band A owing to its engagement with theouter, periphery of said pin becomes slightly creased, such creaseensuring its retention in proper position. The

their adj afriction exercised by the two curls of the y band alsoassists in clamping same in -position around the coupling sleeve C orequivalent member.

As the slot only extends over a portion of a length of the pin a so asto register with theopened out portion of the shackle, when the band isbeing tightened up, as above described, the two halves of the said pinbecome more closely held together whereby their resiliency tending toforce them apart' also assistsin exerting a braking action upon the pina.

Moreover, as the pin a is cylindrically shaped, its rotation Within theloops n can not distort it, as a' result` of which the release of theclip may conveniently be performed without uncurling the band A, it

only being suflicient to slightly unwind the pin a (by any of the aboveenumerated ways) The unwindin of the pin then stops the braking actionre erred to whereby the pin slot b resumes its normal width and makes itpossible to pull the pin out of engagement with the loops n. When after-Wards it is desired vto re-introduce the pin in its proper position witha view to rewinding up the band or ligature, all that is necessary is tothrust the said pin into the loops n. As the outer end of the slot b isflared outwardly, the engagement of the band in such slot is facilitatedparticularly inasmuch as said band then occupies the twisted position pillustrated in F ig. 9.

From the foregoing, it will be apparent that, for use on coupling clipsof the type hereinbefore specified, a .slotted cylindrical winding pinis provided which obviates the several drawbacks inherent to splitwinding pins, whilst permitting a much more eilcient and durablecoupling to be ensured. s

lt must be understood that the form of this winding pin herewith shownand described is to be taken as the preferred embodiment of theinvention and that minor changes in the arrangement of the said pin maybe resorted to 'without departing from the spirit of the invention orthe scope of the subjoined claims.

`What l claim and desire to secure by Letters Patent is l. Thecombination with a coupling clip having a looped shackle of the type setforth, of a Winding pin having a diameter slight-- ly greater than theinnr diameter of the loops of said shackle, so that the loops of saidshackle will be forced to expand and grip said winding pin uponinsertion thereof into the loops of said shackle, and a diametrical slotin said winding pin extending from one of its ends a predeterminedportion of its length; l

2. rlhe combination with .a coupling clip having a looped shackle of thetype set forth,

of a Winding pin having a rounded end and a diameter slightly greaterthan thev inner diameter of the loops of said shackle so that the loopsof said shackle will be forced to expand and grip said winding pin uponinsertion thereof into the loops of said shackle, and a diametrical slotin said winding pin extending from one of its ends a predeterminedportion of its length.

rlhe combination with a coupling clip having a looped shackle of thetype set forth, of a 4winding pin having a diameter slightly greaterthan the inner diameter of the loops of said shackle so that the loopsof said shackle Will be forced to expand and grip said Winding pin uponinsertion thereof into the loops of said shackle; a diametrical slot insaid winding pinv expanding from one of its ends a predetermined portionof its length; and a head on said winding pin at the end opposite saidslotted portion.

4. The combination with a coupling clip having a looped shackle of thetype set forth, of a winding pin having a diameter slightly greater thanthe inner diameter of the loops of said shackle so that the loops ofsaid shackle will be forced yto expand and. grip said winding pin uponinsertion thereof into the loops of said shackle; a diametrical slot insaid winding pin extending from one of its ends a predetermined portionof its length; and an aperture in said winding pin at right-anglesthereto and remote from said slot.

5. rlhe combination with a co-upling clip having a looped shackle of thetype set forth, of a Winding pin having a diameter slightly greater thanthe inner diameter of the loops of said shackle'so that the loops ofsaid shackle will be forced to expand and grip said Winding pin uponinsertion thereof into the loops of said shackle; a diametrical slot insaid winding pin extending from one of its ends a predetermined portionofv its length; a head onv said winding pin at the end ,opposite saidslotted portion; and an aperture in said head at right-angles to saidslot.

6. The combination with a coupling clip having a looped shackle of thetype set forth, of a winding pin having a diameter slightly greater thanthe inner diameter of the loops of said shackle so that the loops ofsaid shackle will be formed to expand and grip said winding pin uponinsertion thereof into the loops-of said shackle, and a diametrical slotin said winding pin flaring out at its end, extending a predeterminedportion of its length.

7. The combination with a coupling clip having a looped shackle of thetype set forth, lof a winding pin having a rounded end and a diameterslightly greater than the inner diameter of the loops of said shackle sothat the loops of said shackle will be forced to expand and grip saidwinding pin upon insertion thereof into the loops of said shackle; and adiametrical slot in said winding pin extending from said rounded end apredetermined portion of its length, said slot being flared outwardly atsaid rounded end and having a width slightly greater than the thicknessof the metallic band forming the coupling clip.

8. The combination with a coupling clip having a looped shackle of thetype set forth, of a'winding pin having a' diameter slightly greaterthan the inner diameter of the loops of said shackle so that the loopsof said shackle will be forced to expandand grip said winding pin uponinsertion thereo-f into the loops of said shackle; a diametrical slot insaid winding pin extending loll from one of its ends a predeterminedpoition of its length; and a head on said Winding pin at the endopposite said slotted portion having a slot formed in the top facethereof.

- 9. The combination With a coupling clip having a looped shackle of thetype set forth, o a Winding pin having a diameter slightly greater thanthe inner diameter of the loops of said shackle so that the loops ofsaid shackle will be 'forced to expand and grip said winding pin uponinsertion thereof into the loops of said shackle; a diametrical slot insaid winding pin extending from one of its ends la predetermined por--tion of its length, and a prisinatically shaped head on said Windingpin.

10. The combination with a coupling clip having a looped shackle of thetype set 2o forth, of a Winding pin having a rounded end and a diameterslightly greater than the inner diameter of the loops of said shackle sothat the loops of said shackle will be forced to expand and grip saidWinding pin upon insertion thereof i-,ntol the loops of said shackle; adiametrical slot in said winding pin extending from said rounded end apredetermined portion of its length, said slot being flared outwardly atsaid rounded end and having a Width slightly greater than the thicknessof the metallic band forming the coupling clip; a head on said windingpin opposite to said rounded end; an aperture in said head atright-angles to said slot; and a diametrical slot formed in the top faceof said head.

v In testimony whereof lfhave signed my name to this specification."-

MARoEnURAiN cAiLLAU.

